Structure and properties of nanocomposite Mo—Si—B—(N) coatings

Kiryukhantsev-Korneev, Ph. V.; Бондарев, А.В.; Shtansky, Dmitry V.; Левашов, Е. А.

doi:10.1134/s2070205115050160

Cited by 21 publications

(10 citation statements)

References 36 publications

(36 reference statements)

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“…SHS ceramics in Mo–Si–B system were used as the targets for magnetron sputtering and electrodes for the electro‐spark deposition of nanostructured oxidation‐resistant Mo–Si–B and Mo–Si–B–N coatings . Magnetron‐sputtered coatings were characterized by a width of 3.5–4.5 μm and high mechanical properties (measured by nanoindentation using 4 mN load): hardness 32 GPa, Young's modulus 340 GPa, elastic recovery 66%.…”

Section: Shs In Mo–si–b Systemmentioning

confidence: 99%

“…The decrease of the friction coefficient was caused by to the formation of SiO 2 on the surface of the coating, with newly formed SiO 2 acting as a solid lubricant. Adhesion strength of the coatings was up to 60 N. The decrease of boron content in the ceramics used as the sputtering target increased the elastic recovery and mechanic properties of the coatings …”

Section: Shs In Mo–si–b Systemmentioning

confidence: 99%

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SHS of Silicon‐Based Ceramics for the High‐Temperature Applications

et al. 2018

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High-temperature materials attract a growing interest from both the scientists and engineers, since the increase of the operating temperatures is crucial for the enhancement of many energy conversion processes. Another area of application of high-temperature materials is high-velocity air flight, where the ultra-high temperature ceramics (UHTCs) are pivotal for the creation of robust nose tips and leading edges of the skins of high-velocity jets. Compounds of refractory metals with silicon, such as TaSi 2 , MoSi 2 , ZrSi 2 , are characterized by unrivaled resistance in aggressive environments. However, most of them are not suitable for application as high-temperature structural materials due to the low mechanical properties. Therefore, they are frequently used as a constituent for the high-temperature composite materials such as TaSi 2 -SiC, ZrC-MoSi 2 , ZrB 2 -MoSi 2 , ZrB 2 -ZrSi 2 . One of the most convenient ways of producing these composite materials is self-propagating hightemperature synthesis (SHS), known for its high productivity, energyefficiency, and ecological safety. This review summarizes the latest developments of the SHS of the silicon-based high-temperature ceramics.

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Section: Shs In Mo–si–b Systemmentioning

confidence: 99%

Section: Shs In Mo–si–b Systemmentioning

confidence: 99%

SHS of Silicon‐Based Ceramics for the High‐Temperature Applications

et al. 2018

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“…Currently, one of the key aspects of materials science is the creation of new materials that improve the performance characteristics of critical parts operating under extreme operating conditions (gas turbine engine parts, high-speed cutting tools, parts of aerospace friction units, etc.) [1].…”

Section: Introductionmentioning

confidence: 99%

“…As a result of studying the effect of adding small amounts of elements such as C [10,11], N [12,13], and Me (Al, Cu, etc.) [1,14,15] on the physical and mechanical characteristics of MoB coatings, it was established that such coatings have higher hardness and a lower coefficient of friction [9]. Adding carbon as an additional component to the coating can lead to a modification in the coating morphology and an improvement in the tribological properties due to the reduced grain size, high surface area, and low friction properties of carbon [9,16].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Al-Mo-B(CN) Coatings Deposited Using Magnetron Sputtering of Al-Mo-B4C Target Produced by Detonation Spray Coating

Zaitsev,

Sirota,

Kovaleva

et al. 2023

Coatings

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In this work, a metal–ceramic composite target for magnetron sputtering was manufactured by a robotic complex for detonation spraying of coatings equipped with a multi-chamber detonation accelerator. The powder composition (30Mo-30Al-40B4C) was sprayed onto the copper plate base of the composite target cathode. The obtained cathode target with Al-Mo-B4C coating (thickness 280–300 μm) was used to deposit the Al-Mo-B(CN) coating (DC mode) on flat specimens of AISI 316 steel and silicon using equipment for magnetron sputtering UNICOAT 200. The Al-Mo-B4C coating has a lamella-type structure with inclusions of boron carbide particles. The structure and morphology of the coatings were studied using methods of optical analysis, scanning electron microscopy, atomic force microscopy, X-ray analysis, and X-ray photoelectron spectroscopy. Mechanical and tribological properties of the Al-Mo-B(CN) thin coatings were studied using a nanoindenter, a scratch tester, and a tribometer under a fluid-free friction regime at room temperature. The Al-Mo-B(CN) coating (thickness ~1 μm) exhibited a dense homogeneous fine-grained design without columnar elements and had an amorphous structure. The formation of the MoB2 and AlN phase with an admixture of oxygen in the form of aluminum oxide, molybdenum oxide, and boron oxide was determined using XPS analysis. The Al-Mo-B(CN) coating possessed a hardness of 13 GPa, an elasticity modulus of 114 GPa, an elastic recovery of 45%, a friction coefficient of 0.8 against a steel 100 Cr6 ball, and an adhesion strength of 11 N.

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“…В этом случае формирование покрытия происходит из единого атомарного потока, содержащего все основные элементы. Ранее c применением СВС-катодов MoSiB были получены покрытия, обладающие твердостью 32 ГПа, упругим восстановлением 66 %, хорошими трибологическими свойствами и жаростойкостью до 1300 °С [26,27]. Было показано, что жаростойкость покрытий повышается пропорционально содержанию Si, что связано с образованием на их поверхности плотных защитных оксидных слоев на основе Si-O, пре пятствующих дальнейшей диффузии кислорода в глубь мате риала.…”

Section: Introductionunclassified

Structure, Mechanical Properties, and Oxidation Resistance of MoSi2, MoSiB, and MoSiB/SiBC Coatings

Kiryukhantsev-Korneev

Potanin

2018

Russ. J. Non-ferrous Metals

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Методом магнетронного напыления получены однослойные покрытия MoSi 2 , MoSiB и многослойные MoSiB/SiBC. Структура покрытий исследована с применением рентгенофазового анализа, растровой электронной микроскопии и оптической эмиссионной спектроскопии тлеющего разряда. Механические свойства покрытий определены с помощью метода наноиндентирования. Исследованы термическая стабильность покрытий в диапазоне температур 600-1200 °С и жаростойкость при нагреве до 1500 °С. Установлено, что однослойные покрытия MoSiB обладают твердостью 27 ГПа, модулем упругости 390 ГПа и упругим восстановлением 48 %, а также могут кратковременно сопротивляться окислению до температуры 1500 °С включительно, что обусловлено формированием на их поверхности защитной пленки на основе SiO 2 . Покрытия MoSi 2 имеют твердость, сравнимую с твердостью покрытий MoSiB, но несколько уступают им по жаростойкости. Многослойные покрытия MoSiB/SiBC характеризовались твердостью 23-27 ГПа и жаростойкостью, ограниченной 1500 °С, но при этом обладали более высокими упругопластическими характеристиками по сравнению с MoSiB.

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Structure and properties of nanocomposite Mo—Si—B—(N) coatings

Cited by 21 publications

References 36 publications

SHS of Silicon‐Based Ceramics for the High‐Temperature Applications

SHS of Silicon‐Based Ceramics for the High‐Temperature Applications

Investigation of the Al-Mo-B(CN) Coatings Deposited Using Magnetron Sputtering of Al-Mo-B4C Target Produced by Detonation Spray Coating

Structure, Mechanical Properties, and Oxidation Resistance of MoSi2, MoSiB, and MoSiB/SiBC Coatings

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